Boeing today unveiled a giant drone that’s capable of lifting a 500 pound payload. Calling it an “unmanned electric vertical-takeoff-and-landing (eVTOL) cargo air vehicle (CAV) prototype,” the aerospace giant said it could serve as a precursor for future autonomous flying aircraft.

The heavy-duty drone took Boeing’s engineers only three months to design and build, the company says. It successfully completed initial flight tests at Boeing’s research lab in Missouri.

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“This flying cargo air vehicle represents another major step in our Boeing eVTOL strategy,” said Boeing chief technology officer Greg Hyslop in a statement. “We have an opportunity to really change air travel and transport, and we’ll look back on this day as a major step in that journey.”